4. When Ted earned his driver's license, he wanted his first solo drive to be to a friend's house. Previously, Ted had always biked to his friend's house and was able to cut though the yards an a park in order to bike
there in a straight line. In his car, however, Ted had no choice but to follow the streets. As a result, he
traveled 6 miles east, 6 miles south, and 2 more miles east. How much shorter, in miles, is Ted's bike route
than his car route?

the answer is 0.42 is that is an option. this question provides no info

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.